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From "Trejkaz (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1262) IndexOutOfBoundsException from FieldsReader after problem reading the index
Date Thu, 10 Apr 2008 00:32:06 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Trejkaz updated LUCENE-1262:
----------------------------

    Attachment: Test.java

Attaching a test program to reproduce the problem under 2.3.1.

It occurs approximately 1 in every 4 executions for any reasonably large text index (really
small ones don't seem to do it so I couldn't attach a text index with it.)  The number of
fields may be related, looking at the IndexOutOfBoundsException numbers it seems that the
indexes we have happen to have a large number of fields.


> IndexOutOfBoundsException from FieldsReader after problem reading the index
> ---------------------------------------------------------------------------
>
>                 Key: LUCENE-1262
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1262
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.3.1
>            Reporter: Trejkaz
>         Attachments: Test.java
>
>
> There is a situation where there is an IOException reading from Hits, and then the next
time you get a NullPointerException instead of an IOException.
> Example stack traces:
> java.io.IOException: The specified network name is no longer available
> 	at java.io.RandomAccessFile.readBytes(Native Method)
> 	at java.io.RandomAccessFile.read(RandomAccessFile.java:322)
> 	at org.apache.lucene.store.FSIndexInput.readInternal(FSDirectory.java:536)
> 	at org.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.java:74)
> 	at org.apache.lucene.index.CompoundFileReader$CSIndexInput.readInternal(CompoundFileReader.java:220)
> 	at org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:93)
> 	at org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:34)
> 	at org.apache.lucene.store.IndexInput.readVInt(IndexInput.java:57)
> 	at org.apache.lucene.index.FieldsReader.doc(FieldsReader.java:88)
> 	at org.apache.lucene.index.SegmentReader.document(SegmentReader.java:344)
> 	at org.apache.lucene.index.IndexReader.document(IndexReader.java:368)
> 	at org.apache.lucene.search.IndexSearcher.doc(IndexSearcher.java:84)
> 	at org.apache.lucene.search.Hits.doc(Hits.java:104)
> That error is fine.  The problem is the next call to doc generates:
> java.lang.NullPointerException
> 	at org.apache.lucene.index.FieldsReader.getIndexType(FieldsReader.java:280)
> 	at org.apache.lucene.index.FieldsReader.addField(FieldsReader.java:216)
> 	at org.apache.lucene.index.FieldsReader.doc(FieldsReader.java:101)
> 	at org.apache.lucene.index.SegmentReader.document(SegmentReader.java:344)
> 	at org.apache.lucene.index.IndexReader.document(IndexReader.java:368)
> 	at org.apache.lucene.search.IndexSearcher.doc(IndexSearcher.java:84)
> 	at org.apache.lucene.search.Hits.doc(Hits.java:104)
> Presumably FieldsReader is caching partially-initialised data somewhere.  I would normally
expect the exact same IOException to be thrown for subsequent calls to the method.

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